A preposition is a word that comes before a noun that tells the reader where one noun is in relation to another noun. In the sentence, after tells when she ended the dinner. In this case "After a disastrous dinner" is the entire prepositional phrase. Sometimes the word to is considered a preposition. However, in this case, it is part of the infinitive form of the verb end. </span>
The history of Georgia could have been different if it were always considered an ideal home for its diverse population. That's because if the population was high Georgia will grow exponentially.